Composition of matter.



I06. COMPOSITIONS,

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Cross Reierence UNITED STATES PATENT OFFICE.

JOHN F. NORMAN, OF LIMA, OHIO.

COMPOSITION OF MATTER.

No Drawing.

Specification of Letters Patent. Application filed February 8, 1909. Serial No. 476,837. OZ

Patented Dec. 14, 1909.

To all whom it may concern:

Be it known that 1, Joan F. NORMAN, a citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented new and useful Imrovements in a Composition of Matter, of which the following is a specification.

My present invention relates to improvements in compositions of matter or substitute material, and more especially to that class of substance that are used for friction purposes such for instance as composition llings for brake-shoes, and it has for its objectprimarily toprovide'an improved artificial material of this character that possesses a high co-eificient of friction, and is capable of resisting the heating tendency thereof due to the friction cnerated between the material and a w eel or other object with which it cooperates.

Another object of the invention is to provide an improved artificial material of this general class which is capable of resisting wear to a considerable degree so as to lengthen the life of the material when used for the purpose of a fricticon facing, and a further object of the invention is to provide such a composition that may be readily and cheaply manufactured of ingredients that are easily procurable, and to provide certain improvements over Letters-Patent No. 818,833, granted to Jacob Laeufer, April 24, 1906, the compositions specified in the present instances adapting the material escially for use as a friction material or filling for composition brake-shoes and analogous devices. The composition in its elemental form consists essentially of a body composed preferably of bone, such for instance as bone, which may divided by grinding or otherwise so as to seeiff''afd' gree of fineness appropriate to the desired characteristics of the resulting composition, and this constituent of the composition is hardened and solidified by an indurating and binding agent, preferably Portland oement. A heat-resisting agent is also 1ncor-' porafed in the composition which adapts it especially for use as a friction mater al, it being preferable to employ a heat resisting agent or medium, such for instance, as asbestos the smoother qualities of the ashes F0? counteracting in a measure any tendency to cut the surface with which it cooperates.

An efiective binding of the above elements is attained by the incorporation of an appropriate quantity of blood prepared preferably in the mannermrth in the Letters- Patent above referred to, hereinafter described, to roduce a composition in accordance wit my present invention possessing a considerable degree of hardness, and wear resisting qualities. I propose to incorporate the ingredients in the proportion of say one qup d of bone one pound asbestos t e atter bei'n'g preferablYina E55 dition to retain its fibrous formation, and to these in edients is added two pounds of ement an these three ingredients are moistened and reduced to a lastic consistency by the addition of a sultable quantity of b ood prepared in the manner above set forth, two pounds of blood to each pound of bone being usually suliicient.

The mass in the plastic state is thoroughly stirred to secure an even mixing and uniform distribution of the constituents throughout the mass, and the mass is allowed to harden in a suitable mold whereby it may possess a shape appropriate to its intended uses. In reparing the composition for use as a friction facing for composition brakeshoes, it is preferableto press the mass in a pla'sticcon ition into thesHeH of the shoe wherein it is allowed'tiihaiden and thus lock itself in place.

The use of bloods of various kinds is appropriate, insuring a thorough cohesion of the solids composing the composition.

It will be understood of course that a composition made in accordance with m present invention is adapted for many di ferent uses, and while it is in a plastic condition it may be molded in any shape suitable for its intended uses, but the composition given as an example in the present embodiment of the invention possesses distinct advantages as afriction material of the characterused in connection with composition brake-shoes, the bone cooperating with the binding material to effect a thorough solidification of the mass so as to prevent fracture EXAMINER or disinte ation thereof, the fibrous strucity combined with an increased degree of tou hness so that the composition when used on rake-shoes is capable of conforming to the contour of the wheel tire under considerable pressure without liabilit of breakage, and the softer quality of t e material insures the proper degree of friction without liability of injuring or unduly wearing the tire of the wheel.

I claim as my invention:

1. A composition of the class described consisting of bone, a heat resisting agent, cement and blood thoroughly incorporated in or about the proportions mentioned.

2. A composition of the class described consisting of finely divided bone, cement, and blood repared by incorporating one with the ot er in or about the proportions mentioned.

3. A composition of the class described consistin of a mixture of bone incorporated wit a heat resisting agent, cement and blood in or about the proportions mentioned.

4. A composition of matter consisting of a mixture of bone, asbestos, cement and blood, embodying as ingredients 9. fibrous material, a heat resistin material, cement, and blood mixed and so idified in or about the proportions mentioned.

5. A composition of the class described consisting of a bone base asbestos, cement and water in or about the proportions mentioned.

6. A com osition of the class described consisting of bone, blood, cement and water in or about the proportions mentioned.

7. A composition of the class described consisting of bone, blood, asbestos and ccment in or about the proportions mentioned.

8. A friction material embodying a bone base, blood, and a deodorizer incorporated therewith in or about the proportions mentioned.

In testimony whereof I have hereto set my hand in presence of two subscribing witnesses.

JOHN F. NORMAN. \Vitnesses:

JAMES S. GRAY, B. F. WHITING. 

